tazobactam and its Impurities
A bacterial β-lactamases inhibitor. Tazobactam is taken in combination with piperacillin.Reference standards of Tazobactam API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
 
	
			                                   
																				(3R)-3-((1H-1,2,3-Triazol-1-yl)methyl)-3-methyl-4-thia-1-azabicyclo[3.2.0]heptan-7-one 4,4-dioxide
(3R)-3-((1H-1,2,3-Triazol-1-yl)methyl)-3-methyl-4-thia-1-azabicyclo[3.2.0]heptan-7-one 4,4-dioxide
- Catalogue No.:PA 20 75530 
- CAS : - NA
- Molecular Formula : C9H12N4O3S 
- Molecular Weight : 256.28 
 
	
			                                   
																				(2S,3S)-Ethyl 3-((1H-1,2,3-triazol-1-yl)methyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 4,4-dioxide
(2S,3S)-Ethyl 3-((1H-1,2,3-triazol-1-yl)methyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 4,4-dioxide
- Catalogue No.:PA 20 75540 
- CAS : - NA
- Molecular Formula : C12H16N4O5S 
- Molecular Weight : 328.34 
 
	
			                                   
																				(2S,3R)-2,3-Dicarboxy-7-oxo-3-(1H-1,2,3-triazole-1-carbonyl)-4-thia-1-azabicyclo[3.2.0]heptane 1-oxide 4,4-dioxide
(2S,3R)-2,3-Dicarboxy-7-oxo-3-(1H-1,2,3-triazole-1-carbonyl)-4-thia-1-azabicyclo[3.2.0]heptane 1-oxide 4,4-dioxide
- Catalogue No.:PA 20 75550 
- CAS : - NA
- Molecular Formula : C10H8N4O9S 
- Molecular Weight : 360.26 
 
	
			                                   
																				(2S,3S)-3-Formyl-7-oxo-3-(1H-1,2,3-triazole-1-carbonyl)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 4,4-dioxide
(2S,3S)-3-Formyl-7-oxo-3-(1H-1,2,3-triazole-1-carbonyl)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 4,4-dioxide
- Catalogue No.:PA 20 75560 
- CAS : - NA
- Molecular Formula : C10H8N4O7S 
- Molecular Weight : 328.26 
 
	
			                                   
																				(2S,3S)-Benzhydryl 3-((1H-1,2,3-triazol-1-yl)methyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 4,4-dioxide
(2S,3S)-Benzhydryl 3-((1H-1,2,3-triazol-1-yl)methyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 4,4-dioxide
- Catalogue No.:PA 20 75570 
- CAS : - NA
- Molecular Formula : C23H22N4O5S 
- Molecular Weight : 466.51 
 
	
			                                   
																				(2R,3S)-Benzhydryl 3-methyl-8-oxo-3-(1H-1,2,3-triazol-1-yl)-5-thia-1-azabicyclo[4.2.0]octane-2-carboxylate
(2R,3S)-Benzhydryl 3-methyl-8-oxo-3-(1H-1,2,3-triazol-1-yl)-5-thia-1-azabicyclo[4.2.0]octane-2-carboxylate
- Catalogue No.:PA 20 75620 
- CAS : - NA
- Molecular Formula : C23H22N4O3S 
- Molecular Weight : 434.51 
 
	
			                                   
																				(2S,3R)-Benzhydryl 3-((1H-1,2,3-triazol-1-yl)methyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate
(2S,3R)-Benzhydryl 3-((1H-1,2,3-triazol-1-yl)methyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate
- Catalogue No.:PA 20 75630 
- CAS : - NA
- Molecular Formula : C23H22N4O3S 
- Molecular Weight : 434.51 
 
	
			                                   
																				(2S,3S)-Benzhydryl 3-((1H-1,2,3-triazol-1-yl)methyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 4-oxide
(2S,3S)-Benzhydryl 3-((1H-1,2,3-triazol-1-yl)methyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 4-oxide
- Catalogue No.:PA 20 75640 
- CAS : - 1628710-72-4
- Molecular Formula : C23H22N4O4S 
- Molecular Weight : 450.51 
 
	
			                                   
																				(2S,3R)-3-Carboxy-2-(2,2-diphenylacetyl)-7-oxo-3-(1H-1,2,3-triazole-1-carbonyl)-4-thia-1-azabicyclo[3.2.0]heptane 1-oxide 4,4-dioxide
(2S,3R)-3-Carboxy-2-(2,2-diphenylacetyl)-7-oxo-3-(1H-1,2,3-triazole-1-carbonyl)-4-thia-1-azabicyclo[3.2.0]heptane 1-oxide 4,4-dioxide
- Catalogue No.:PA 20 75650 
- CAS : - NA
- Molecular Formula : C23H18N4O8S 
- Molecular Weight : 510.48 
 
	
			                                   
																				(2S,3S)-2-(2,2-Diphenylacetyl)-7-oxo-3-(1H-1,2,3-triazole-1-carbonyl)-4-thia-1-azabicyclo[3.2.0]heptane-3-carbaldehyde 4,4-dioxide
(2S,3S)-2-(2,2-Diphenylacetyl)-7-oxo-3-(1H-1,2,3-triazole-1-carbonyl)-4-thia-1-azabicyclo[3.2.0]heptane-3-carbaldehyde 4,4-dioxide
- Catalogue No.:PA 20 75660 
- CAS : - NA
- Molecular Formula : C23H18N4O6S 
- Molecular Weight : 478.48 
 
	
			                                   
																				Benzhydryl (2S,3R)-3-(chloromethyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate
Benzhydryl (2S,3R)-3-(chloromethyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate
- Catalogue No.:PA 20 75680 
- CAS : - 2538151-39-0
- Molecular Formula : C21H20ClNO3S 
- Molecular Weight : 401.91 
 
	
			                                   
																				Tazobactam Related Compound A ((2S,3S)-2-Amino-3-methyl-3-sulfino-4-(1H-1,2,3-triazol-1-yl)butyric (1643394)
Tazobactam Related Compound A ((2S,3S)-2-Amino-3-methyl-3-sulfino-4-(1H-1,2,3-triazol-1-yl)butyric (1643394)
- Catalogue No.:PA USP1643394 
- CAS : - 118175-11-4
- Molecular Formula : NA 
- Molecular Weight : NA 
 
	
			                                   
																				Tazobactam - Impurity D
(5aS,6aR,9aS)-1-(Diphenylmethyl)-5a-methyl-5a,6a,7,9a-tetrahydro-1H-6λ6 -azeto[2',1':2,3][1,3]thiazolo[5,4-e][1,2,3]triazolo[2,1-b][1,2,3]oxadiazepine-6,6,8,10(5H)-tetrone
- Catalogue No.:PA 20 0750040 
- CAS : - NA
- Molecular Formula : C23H22N4O5S 
- Molecular Weight : 466.51 
 
	
			                                   
																				(2S,3S,5R)-3-((2H-1,2,3-Triazol-2-yl)methyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 4,4-dioxide
(2S,3S,5R)-3-((2H-1,2,3-Triazol-2-yl)methyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 4,4-dioxide
- Catalogue No.:PA 20 0751001 
- CAS : - 765233-56-5
- Molecular Formula : C10H12N4O5S 
- Molecular Weight : 300.29 
 
	
			                                   
																				(2S,5R)-Benzhydryl 3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 4-oxide (BSC)
(2S,5R)-Benzhydryl 3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 4-oxide
- Catalogue No.:PA BSC 07520944 
- CAS : - 87579-78-0
- Molecular Formula : C21H21NO4S 
- Molecular Weight : 383.46 
 
	
			                                   
																				(2S,3R,5R)-3-(Chloromethyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 4,4-dioxide
(2S,3R,5R)-3-(Chloromethyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 4,4-dioxide
- Catalogue No.:PA 20 0751002 
- CAS : - 79886-07-0
- Molecular Formula : C8H10ClNO5S 
- Molecular Weight : 267.68 
 
	
			                                   
																				Benzhydryl (2S,5R,6R)-3,3-dimethyl-7-oxo-6-(2-phenylacetamido)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 4-oxide
Benzhydryl (2S,5R,6R)-3,3-dimethyl-7-oxo-6-(2-phenylacetamido)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 4-oxide
- Catalogue No.:PA 20 0751004 
- CAS : - 51446-87-8
- Molecular Formula : C29H28N2O5S 
- Molecular Weight : 516.61 
 
	
			                                   
																				Benzhydryl (2S,3S,5R,6S)-3-((1H-1,2,3-triazol-1-yl)methyl)-6-bromo-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate
Benzhydryl (2S,3S,5R,6S)-3-((1H-1,2,3-triazol-1-yl)methyl)-6-bromo-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate
- Catalogue No.:PA 20 0751005 
- CAS : - 125992-32-7
- Molecular Formula : C23H21BrN4O3S 
- Molecular Weight : 513.41 

 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
 
 
 
